The activated carbon media used in the systems is produced from charcoal or coconut shells activated by steam or burned without oxygen has a surface are of between 900 - 1100 m2/gr. Capacity of AC filter are determined by features of AC used as a filter media and right selection of filtration velocity in the bed. In AC Systems, beside filtration mechanism, adsorption mechanism is used, therefore AC Filters are systems making physco-chemical purification. AC Filters operate completely automatic without interference of human. AC Filters remove particulates accumulated in the bed by doing daily 15-20 minutes of automatic backwash.